Patch AD performance bug (#272)

* Replace Base.Fix1 with regular closure

* Bump patch

Author: willtebbutt

Project.toml

@@ -1,6 +1,6 @@
 name = "KernelFunctions"
 uuid = "ec8451be-7e33-11e9-00cf-bbf324bd1392"
-version = "0.9.0"
+version = "0.9.1"
 
 [deps]
 ChainRulesCore = "d360d2e6-b24c-11e9-a2a3-2a2ae2dbcce4"

src/matrix/kernelmatrix.jl

@@ -80,32 +80,32 @@ kernelmatrix_diag(κ::Kernel, x::AbstractVector, y::AbstractVector) = map(κ, x,
 function kernelmatrix!(K::AbstractMatrix, κ::SimpleKernel, x::AbstractVector)
     validate_inplace_dims(K, x)
     pairwise!(K, metric(κ), x)
-    return map!(Base.Fix1(kappa, κ), K, K)
+    return map!(x -> kappa(κ, x), K, K)
 end
 
 function kernelmatrix!(
     K::AbstractMatrix, κ::SimpleKernel, x::AbstractVector, y::AbstractVector
 )
     validate_inplace_dims(K, x, y)
     pairwise!(K, metric(κ), x, y)
-    return map!(Base.Fix1(kappa, κ), K, K)
+    return map!(x -> kappa(κ, x), K, K)
 end
 
 function kernelmatrix(κ::SimpleKernel, x::AbstractVector)
-    return map(Base.Fix1(kappa, κ), pairwise(metric(κ), x))
+    return map(x -> kappa(κ, x), pairwise(metric(κ), x))
 end
 
 function kernelmatrix(κ::SimpleKernel, x::AbstractVector, y::AbstractVector)
     validate_inputs(x, y)
-    return map(Base.Fix1(kappa, κ), pairwise(metric(κ), x, y))
+    return map(x -> kappa(κ, x), pairwise(metric(κ), x, y))
 end
 
 function kernelmatrix_diag(κ::SimpleKernel, x::AbstractVector)
-    return map(Base.Fix1(kappa, κ), colwise(metric(κ), x))
+    return map(x -> kappa(κ, x), colwise(metric(κ), x))
 end
 
 function kernelmatrix_diag(κ::SimpleKernel, x::AbstractVector, y::AbstractVector)
-    return map(Base.Fix1(kappa, κ), colwise(metric(κ), x, y))
+    return map(x -> kappa(κ, x), colwise(metric(κ), x, y))
 end
 
 #